Shenzhen Top-net Communication Technology Co., Ltd devote to research & development, manufacture industry communication network product and security transmission product.  Planning to be the international first-class industry communication and security transmission expert. We provide the industry communication network products and security transmission products with the benefit cost and high stability for our customers. Our products have been widely used in water conservation, Electric power, digital city , telecommunication, transportation, coal, petrochemical, metallurgy, environmental protection, production safety management, military industry etc, praised and trusted by our customers.